Infrared imaging of ultrasonically excited subsurface defects in materials
US6236049A · kind A · utility
30Cited by
20References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Sep 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2694
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermal imaging system for detecting cracks and defects in a component. An ultrasonic transducer is coupled to the specimen through a malleable coupler. Ultrasonic energy from the transducer causes the defects to heat up, which is detected by a thermal camera. The ultrasonic energy is in the form of a pulse where the frequency of the ultrasonic signal is substantially constant within the pulse. A control unit is employed to provide timing and control for the operation of the ultrasonic transducer and the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.